Walk-in tub



FIG. 1 is a top, left side, perspective view of an improved whirlpool tub showing my new design;

FIG. 2 is a is a front elevational view;

FIG. 3 is a is a rear elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a is a left side view;

FIG. 6 is a right side view;

FIG. 7 is a cut-away top right side perspective view showing an interior wall and an interior sear; and,

FIG. 8 is a cut-away, top rear perspective view showing an interior seat, thereof. 

CLAIM The ornamental design for an improved walk-in tub, as shown and described. 